Kotlin and Android development featuring Jetpack : build better, safer Android apps / Michael Fazio.

Format:

Book

Author/Creator:

Fazio, Michael, author.

Language:

English

Subjects (All):

Application software--Development.

Application software.

Physical Description:

1 online resource (488 pages)

Edition:

First edition.

Place of Publication:

Raleigh, North Carolina : The Pragmatic Programmers, LLC, [2021]

Summary:

Start building native Android apps the modern way in Kotlin with Jetpack's expansive set of tools, libraries, and best practices. Learn how to create efficient, resilient views with Fragments and share data between the views with ViewModels. Use Room to persist valuable data quickly, and avoid NullPointerExceptions and Java's verbose expressions with Kotlin. You can even handle asynchronous web service calls elegantly with Kotlin coroutines. Achieve all of this and much more while building two full-featured apps, following detailed, step-by-step instructions.With Kotlin and Jetpack, Android development is now smoother and more enjoyable than ever before. Dive right in by developing two complete Android apps.With the first app, Penny Drop, you create a full game complete with random die rolls, customizable rules, and AI opponents. Build lightweight Fragment views with data binding, quickly and safely update data with ViewModel classes, and handle all app navigation in a single location. Use Kotlin with Android-specific Kotlin extensions to efficiently write null-safe code without all the normal boilerplate required for pre-Jetpack + Kotlin apps. Persist and retrieve data as full objects with the Room library, then display that data with ViewModels and list records in a RecyclerView.Next, you create the official app for the Android Baseball League. It's a fake league but a real app, where you use what you learn in Penny Drop and build up from there. Navigate all over the app via a Navigation Drawer, including specific locations via Android App Links. Handle asynchronous and web service calls with Kotlin Coroutines, display that data smoothly with the Paging library, and send notifications to a user's phone from your app.Come build Android apps the modern way with Kotlin and Jetpack!What You Need:You'll need the Android SDK, a text editor, and either a real Android device or emulator for testing. While not strictly required, it's assumed you're using Android Studio, which comes with the Android SDK and simplifies creating an emulator. Also, a few examples require JDK 1.8 or later, though all of these pieces can be completed in other ways when using JDK 1.6.

Contents:

Intro

Kotlin and Android Development fe aturing Jetpack

About the Pragmatic Bookshelf

Table of Contents

Early Praise for Kotlin and Android Development featuring Jetpack

Acknowledgments

Preface

Introduction

Who Is This Book For

If You're New to Android and/or Kotlin

How to Read This Book

Development Tips for the Book

Online Resources

Ready to Go?

Pa rt 1 Penny Drop

Chapter 1: Initialize the Penny Drop App

How to Play Penny Drop

Create the App

What Else Do We Need?

Summary and Next Steps

Chapter 2: Build Views with Fragments

Build a Fragment (Pick Players)

Add Data Binding to the App

Build Another Fragment (G ame)

Chapter 3: Bind Data with ViewModels

Create a ViewModel (Pick Players)

Bind ViewModel to a Fragment (Pick Players)

Add AI Spinner to Player List Items

Customize the Player List Items

Create Another ViewModel (Game)

Bind ViewModel to a Fragment (Game)

Chapter 4: Update LiveData with Conditional Game Logic

Create GameHandler

Start a Game

More GameViewMod el Functions: roll() and pass()

Update the UI

Create Turn Summary Text

Handle AI Turns with Coroutines and First-Cla ss Functions

Chapter 5: Persist Game Data with Room

Add Room to the App

Add a RoomDatabase Class

Create a DAO Class

Add Entity Classes

Add Data During Database Creatio n

Add Converters to the Database

Create a Repository Class

Access the Database from a V iewModel

Update the UI Data Binding

Chapter 6: Build a List with RecyclerView

Add the RecyclerView

Build the List Item Layout

Create a Custom ListAda pter

Connect Adapter to RecyclerView

Load Data into RecyclerVie w from Database

Summary and Next Steps.

Chapter 7: Customize an App with Settings and Themes

Add a New SettingsFragment

Use Saved Preferences

Add Themes

Change Themes

Add Night Mode Support

Add an About the App Section

Part 2: Android Baseball League

Chapter 8: Initialize the Android Baseball League App

Welcome to the Official ABL App

Configure the Activity

Add the First Fragment

Chapter 9: Navigate via Navigation Drawer

Add the Navigation Drawer

Add Fragments (Standing s and Single Team)

Pass Data with Safe Args

Navigate Directly via a Dee p Link

Chapter 10: Load and Save Data with Coroutines and Room

Create a Database

Work with Retrofit

Load Data from External APIs

Add a New Fragment (Scoreboard)

Chapter 11: Display Data with Paging

Add Two New Fragments (Leaders and Single Pla yer)

Add a New Fragment (Players)

Handle Paging Data in the App

Display Paging Data in a RecyclerView List

Chapter 12: Personalize the Android Baseball League App

Build a Settings Screen via Code

Extract Colors with Palette

Add and Group Additional Preferences

Reliably Complete Backg round Work with WorkManager

Chapter 13: Send Info to and from the Android Baseball League App

Alert Users with Notifications

Send Cloud-Based Alerts with Push Notificatio ns

Share Links with Android Sharesheet

Part 3: Test Your App

Chapter 14: Unit Test Your App with JUnit

Add Unit Tests

Test a ViewModel Class

Test a Data Access Object (DAO)

Chapter 15: Test Your App's UI with Espresso

Add UI Tests

Add More UI Tests

Part 4: Appendixes.

Appendix 1: Install Android Studio

Download Android Studio

Install Android Studio

Set Up an Android Virtual Device (AVD)

Appendix 2: Troubleshooting Your App

Debug Your App

Display Messages with the Toast Class

Log Messages to Logcat

Wrapping Up

Appendix 3: Gradle Dependencies

Classpath Dependencies

Implementation Dependencies

KAPT Dependencies

Test Dependencies

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Notes:

Description based on publisher supplied metadata and other sources.

Description based on print version record.

ISBN:

9781680508680

1680508687

OCLC:

1262370464